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浙江大学学报(工学版)
J4  2012, Vol. 46 Issue (1): 20-26    DOI: 10.3785/j.issn.1008-973X.2012.01.04
土木工程     
高层建筑边角凹凸对体型系数分布的影响
汪小娣1,沈金2,楼文娟1
1.浙江大学 结构工程研究所,浙江 杭州 310058；2.浙江大学建筑设计研究院,浙江 杭州 310027
Influence of high-rise building's concave convex corner on
wind load shape coefficient distribution
WANG Xiao-di1, SHEN Jin2, LOU Wen-juan1
1. Institute of Structural Engineering, Zhejiang University, Hangzhou 310058, China; 2. Architectural Design and
Research Institute of Zhejiang University, Hangzhou 310027, China
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摘要：

通过风洞试验,研究多边形截面高层建筑边角凹凸对风载体型系数分布的影响.探讨不同边角凹凸的正方形及八角形等7种典型多边形截面的平均风压体型系数和极值风压体型系数的分布特征,并与规范十字形截面和CAARC标模进行比较；分析各种截面的风压敏感点位置,提出抗风最有利的截面形式.研究发现,0°风向角下迎风直角切角的体型系数与规范十字形有很大差异；十字形,深、浅锯齿,带凹槽的浅锯齿正方形截面的来流分离点不一致,凹槽可以缓和切角处的气流分离,使切角和中间区域的体型系数趋于一致；比较这4种截面形式,认为带凹槽的浅锯齿正方形截面为最优截面,浅锯齿正方形截面为最不利截面.
Abstract:

The influence of polygon high-rise building’s concave convex corner on the wind load shape coefficients distribution was analyzed based on the wind tunnel tests. The distribution characteristics of mean wind pressure shape coefficients and extreme wind pressure shape coefficients of seven representative polygon sections with different concave convex corners were analyzed and compared with both the standard crisscross section and the CAARC mode. The best section for wind-resistant was presented according to the analysis of wind pressure sensitive position of seven cross-sections. Results show that the upwind right-cutting angle’s shape coefficients are inconsistent with the standard crisscross. The incoming flow’s separation points of four sections, including crisscross, deep, shallow serrated square and shallow serrated square cross-section with a groove are different. Groove makes the shape coefficients of cutting angle and middle area uniform by mitigating the separation of flow in the cutting angle. By comparing these four cross-sections, the shallow serrated square cross-section with a groove is considered to be the optimal section, while the shallow serrated square cross-section is the most unfavorable section.
出版日期: 2012-02-22
:  TU 312  
基金资助:

国家自然科学基金资助项目(50578144).
通讯作者: 楼文娟，女，教授，博导.     E-mail: louwj@zju.edu.cn
作者简介: 汪小娣（1986-），女，硕士生，从事结构风工程研究. E-mail: xiaodiwangsky@gmail.com
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引用本文:

汪小娣,沈金,楼文娟. 高层建筑边角凹凸对体型系数分布的影响[J]. J4, 2012, 46(1): 20-26.

WANG Xiao-di, SHEN Jin, LOU Wen-juan. Influence of high-rise building's concave convex corner on
wind load shape coefficient distribution. J4, 2012, 46(1): 20-26.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2012.01.04    或    http://www.zjujournals.com/eng/CN/Y2012/V46/I1/20

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